This Knob Latch is an original replacement part that is used on
out swinging wood or metal storm or screen doors from one to 1-1/4 inches (25.4 to 31.8 millimeters) thick. It easily installs with three 5/16 inch (7.9 millimeter) holes and 1-1/2 inch (38.1 millimeter) center-to-center between the holes. It has an interior locking mechanism. The
electrostatically applied finish will not wear or chip off.